The Experts below are selected from a list of 14931 Experts worldwide ranked by ideXlab platform

Massimiliano Pieraccini - One of the best experts on this subject based on the ideXlab platform.

  • Handy Microwave Sensor for Remote Detection of Structural Vibration
    2014
    Co-Authors: Federico Papi, Nicoletta Donati, Massimiliano Pieraccini
    Abstract:

    The authors propose a novel handy Microwave Sensor for monitoring structures as bridges, towers, streetlight, floors. It operated at distance by detecting the natural frequency of the structure under test. The device has been designed as a handy instrument with a friend user-interface and a simple measurement procedure. The aim is to provide a portable equipment for the engineering studies. The prototype has been tested in laboratory conditions and in a preliminary in-field measurement session on a streetlight.

  • Microwave Sensor for molten glass level measurement
    Sensors and Actuators A-physical, 2014
    Co-Authors: Massimiliano Pieraccini, Giuseppe Macaluso, Daniele Mecatti, Filippo Parrini, Alessandro Spinetti, Fulvio Puccioni
    Abstract:

    Abstract Measurement of molten glass level in glass furnaces is a key issue for the control of the production process. Nowadays several different technologies shall be used for this purpose, with their advantages and drawbacks. In this paper a novel level Sensor is proposed, it is based on radar interferometry technique, and it is designed to provide high accuracy measurements, high reliability and a very low maintenance.

  • Non-Contact Detection of Breathing Using a Microwave Sensor
    Sensors, 2009
    Co-Authors: Devis Dei, Gilberto Grazzini, Sergio Boncinelli, Massimo Marsili, Carlo Atzeni, Guido Luzi, Walter Castellani, Gianna Camiciottoli, Massimiliano Pieraccini, Juri Lo Dico
    Abstract:

    In this paper the use of a continuous-wave Microwave Sensor as a non-contact tool for quantitative measurement of respiratory tidal volume has been evaluated by experimentation in seventeen healthy volunteers. The Sensor working principle is reported and several causes that can affect its response are analyzed. A suitable data processing has been devised able to reject the majority of breath measurements taken under non suitable conditions. Furthermore, a relationship between Microwave Sensor measurements and volume inspired and expired at quiet breathing (tidal volume) has been found.

  • Simple Microwave Sensor for remote detection of structural vibration
    Electronics Letters, 2009
    Co-Authors: Gilberto Grazzini, Devis Dei, Massimiliano Pieraccini, Carlo Atzeni
    Abstract:

    A simple Microwave Sensor for the detection of the dynamic characteristics of large structure vibration is proposed. It consists of a continuous-wave radar capable of detecting the structure movement by measuring the phase of the back-reflected wave. The system performances have been demonstrated in a case study monitoring a pedestrian bridge. Introduction:

  • in service testing of wind turbine towers using a Microwave Sensor
    Renewable Energy, 2008
    Co-Authors: Massimiliano Pieraccini, Carlo Atzeni, Filippo Parrini, M Fratini, Paolo Spinelli
    Abstract:

    A remote-sensing technique based on Microwave interferometry is applied to dynamic testing of wind turbine towers for power generation. A high-speed interferometric radar is able to sample the structure at a rate high enough for modal and transient analysis. An experimental campaign is reported carried out on wind turbine towers of a power plant in north Sardinia, Italy.

Ming Huang - One of the best experts on this subject based on the ideXlab platform.

  • Microwave Sensor based on square stereo-complementary asymmetric single split rectangular resonator
    2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
    Co-Authors: Xi Ming Li, J.j. Yang, Ming Huang
    Abstract:

    According to Babinet's principle a square complementary asymmetric split ring resonator (caSRR) is proposed. Interestingly, due to the particularity of the caSRR structure, it can be fabricated on a mental sheet without the substrate, which is named as Stereo-caSRR. A Microwave Sensor which consists of a rectangular waveguide loaded with the square stereo-caSRR is designed. Simulation results show that the square Stereo-caSRR possesses a much higher Q-factor compared with traditional planar caSRR since the influence of the lossy substance has been eliminated. The stereo-caSRR assisted Microwave Sensor has a good linearity since the electric field can be confined to the arm of the resonator which is quite sensitive to a small change dielectric environment.

  • Rapid determination of the moisture content of milk powder by Microwave Sensor
    Measurement: Journal of the International Measurement Confederation, 2016
    Co-Authors: Jing Jing Yang, Ming Huang, Jinhui Peng, Jihong Shi
    Abstract:

    A rapid method of determining the moisture content of milk powder by Microwave Sensor is investigated. Calibration models of milk powder moisture content are established using the linear least squares method. The results predicted by the Microwave technique are compared with that determined by standard weighing method. It shows that the maximal measurement deviation was 0.2%, based on the Microwave method, which provides an effective tool for determining the moisture content of milk powder in the dairy processing industry.

  • Microwave Sensor Using Metamaterials
    Wave Propagation, 2011
    Co-Authors: Ming Huang, Jing Jing Yang
    Abstract:

    It is well known that electromagnetic wave can be applied to wireless communication, radar, heating and power transmission. It has brought human society into industrial and information age. The mechanism behind these applications is electromagnetic radiation, i.e. energy transportation and conversion. Recently, research shows that evanescent wave, which is non-radiation wave associated with guided wave theory, can be amplified by metamaterials. Moreover, the sensitivity and resolution of Sensor using metamaterials can be dramatically enhanced. The metamaterial-assisted Sensors hope to fuel the revolution of sensing technology. This chapter aims at the study of metamaterial-assisted Sensors. Firstly, traditional Microwave Sensors are concisely reviewed, with emphasis on the method of Microwave coupling, and the working principle of resonant Microwave Sensor. Then, the properties of metamaterials and its application are introduced. Enhancement of sensitivity in slab waveguide with TM mode and subwavelength resolution properties of perfect slab lens are demonstrated. The mechanisms of metamaterials for amplifying evanescent wave and for improving sensitivity and resolution are studied. Thirdly, the simulation results of the Microwave Sensor using epsilon near-zero materials (ENZ) and metamaterial particles are given. At last, the metamaterial-assisted open resonators are discussed.

  • MODELING AND ANALYSIS OF A NOVEL Microwave Sensor BASED ON WAVEGUIDE FILLING WITH A METAMATERIAL PARTICLE
    Modern Physics Letters B, 2010
    Co-Authors: Ming Huang, Jing Jing Yang, Jinhui Peng
    Abstract:

    A novel Microwave Sensor based on waveguide filled with a metamaterial particle, which is composed of meander line and split-ring-resonator (SRR), is presented and modeled using a full wave electromagnetic commercial simulator CST. Simulating results show that evanescent mode are enhanced and transmitted through the structured particle within the frequency band that exhibits negative permittivity and permeability. Evanescent mode is sensitive to permittivity of dielectric material in the detecting zone. Comparing with conventional Microwave resonant Sensor, the Microwave Sensor using evanescent mode allows for much higher detection sensitivity.

  • SIMULATION AND ANALYSIS OF ASYMMETRIC METAMATERIAL RESONATOR-ASSISTED Microwave Sensor
    Modern Physics Letters B, 2010
    Co-Authors: Jing Jing Yang, Zhe Xiao, Ming Huang, Jinhui Peng
    Abstract:

    Based on the field enhancement principle of trapped modes, two new\nasymmetric metamaterial resonators are presented. Transmission response\n(S(21)) of the rectangular wave-guide filled with an asymmetric metamaterial\nresonator is simulated. Results show that the asymmetric resonator\npossesses high Q-factor and improved sensitivity. The Microwave Sensor\nbased on the asymmetric resonator can be flexibly tailored to design\nrequirement by varying the asymmetry parameter or the topological\nstructure of the resonator. The asymmetric metamaterial resonator-assisted\nMicrowave Sensor will have potential applications in bioSensor and\nchemoSensor fields for sensing minute amounts of dielectric sample\nsubstance

Carlo Atzeni - One of the best experts on this subject based on the ideXlab platform.

  • Non-Contact Detection of Breathing Using a Microwave Sensor
    Sensors, 2009
    Co-Authors: Devis Dei, Gilberto Grazzini, Sergio Boncinelli, Massimo Marsili, Carlo Atzeni, Guido Luzi, Walter Castellani, Gianna Camiciottoli, Massimiliano Pieraccini, Juri Lo Dico
    Abstract:

    In this paper the use of a continuous-wave Microwave Sensor as a non-contact tool for quantitative measurement of respiratory tidal volume has been evaluated by experimentation in seventeen healthy volunteers. The Sensor working principle is reported and several causes that can affect its response are analyzed. A suitable data processing has been devised able to reject the majority of breath measurements taken under non suitable conditions. Furthermore, a relationship between Microwave Sensor measurements and volume inspired and expired at quiet breathing (tidal volume) has been found.

  • Simple Microwave Sensor for remote detection of structural vibration
    Electronics Letters, 2009
    Co-Authors: Gilberto Grazzini, Devis Dei, Massimiliano Pieraccini, Carlo Atzeni
    Abstract:

    A simple Microwave Sensor for the detection of the dynamic characteristics of large structure vibration is proposed. It consists of a continuous-wave radar capable of detecting the structure movement by measuring the phase of the back-reflected wave. The system performances have been demonstrated in a case study monitoring a pedestrian bridge. Introduction:

  • in service testing of wind turbine towers using a Microwave Sensor
    Renewable Energy, 2008
    Co-Authors: Massimiliano Pieraccini, Carlo Atzeni, Filippo Parrini, M Fratini, Paolo Spinelli
    Abstract:

    A remote-sensing technique based on Microwave interferometry is applied to dynamic testing of wind turbine towers for power generation. A high-speed interferometric radar is able to sample the structure at a rate high enough for modal and transient analysis. An experimental campaign is reported carried out on wind turbine towers of a power plant in north Sardinia, Italy.

Jinhui Peng - One of the best experts on this subject based on the ideXlab platform.

  • Rapid determination of the moisture content of milk powder by Microwave Sensor
    Measurement: Journal of the International Measurement Confederation, 2016
    Co-Authors: Jing Jing Yang, Ming Huang, Jinhui Peng, Jihong Shi
    Abstract:

    A rapid method of determining the moisture content of milk powder by Microwave Sensor is investigated. Calibration models of milk powder moisture content are established using the linear least squares method. The results predicted by the Microwave technique are compared with that determined by standard weighing method. It shows that the maximal measurement deviation was 0.2%, based on the Microwave method, which provides an effective tool for determining the moisture content of milk powder in the dairy processing industry.

  • MODELING AND ANALYSIS OF A NOVEL Microwave Sensor BASED ON WAVEGUIDE FILLING WITH A METAMATERIAL PARTICLE
    Modern Physics Letters B, 2010
    Co-Authors: Ming Huang, Jing Jing Yang, Jinhui Peng
    Abstract:

    A novel Microwave Sensor based on waveguide filled with a metamaterial particle, which is composed of meander line and split-ring-resonator (SRR), is presented and modeled using a full wave electromagnetic commercial simulator CST. Simulating results show that evanescent mode are enhanced and transmitted through the structured particle within the frequency band that exhibits negative permittivity and permeability. Evanescent mode is sensitive to permittivity of dielectric material in the detecting zone. Comparing with conventional Microwave resonant Sensor, the Microwave Sensor using evanescent mode allows for much higher detection sensitivity.

  • SIMULATION AND ANALYSIS OF ASYMMETRIC METAMATERIAL RESONATOR-ASSISTED Microwave Sensor
    Modern Physics Letters B, 2010
    Co-Authors: Jing Jing Yang, Zhe Xiao, Ming Huang, Jinhui Peng
    Abstract:

    Based on the field enhancement principle of trapped modes, two new\nasymmetric metamaterial resonators are presented. Transmission response\n(S(21)) of the rectangular wave-guide filled with an asymmetric metamaterial\nresonator is simulated. Results show that the asymmetric resonator\npossesses high Q-factor and improved sensitivity. The Microwave Sensor\nbased on the asymmetric resonator can be flexibly tailored to design\nrequirement by varying the asymmetry parameter or the topological\nstructure of the resonator. The asymmetric metamaterial resonator-assisted\nMicrowave Sensor will have potential applications in bioSensor and\nchemoSensor fields for sensing minute amounts of dielectric sample\nsubstance

  • Modelling and Analysis of Ω-shaped Double Negative Material-assisted Microwave Sensor
    Journal of Infrared Millimeter and Terahertz Waves, 2009
    Co-Authors: Ming Huang, Jing Jing Yang, Jinhui Peng
    Abstract:

    A novel Ω-shaped double negative (DNG) material-assisted Microwave Sensor is presented, and modelled using a full wave electromagnetic commercial simulator CST. Simulating results show that the amplified evanescent wave is sensitive to the permittivity of dielectric material in the detecting zone. Meanwhile, mechanism of the evanescent wave amplification is explained. Comparing with conventional Microwave resonant Sensor, the Ω-shaped DNG materials-assisted Microwave Sensor allows for much higher sensitivity.

  • A novel Microwave Sensor based on rectangular waveguide filled with a DNG material
    ISAPE 2008 - The 8th International Symposium on Antennas Propagation and EM Theory Proceedings, 2008
    Co-Authors: Jun Sun, Jing Jing Yang, Ming Huang, Jinhui Peng, Jihong Shi
    Abstract:

    A novel Microwave Sensor based on rectangular waveguide filled with a double negative (DNG) material is modelled using a full wave electromagnetic commercial simulator CST. Simulating results show that evanescent mode are amplified and transmitted through the structured DNG materials within the frequency band that exhibits negative permittivity and permeability. Evanescent mode is sensitive to permittivity of dielectric material in the detecting zone. Comparing with the conventional Microwave resonator, DNG materials-assisted Microwave Sensor allows for higher sensitivity.

Y S Gui - One of the best experts on this subject based on the ideXlab platform.

  • Microwave holography using a magnetic tunnel junction based spintronic Microwave Sensor
    Journal of Applied Physics, 2015
    Co-Authors: Y S Gui, Lihui Bai, Hong Guo, Hakima Abourachid
    Abstract:

    In this work, a spintronic Sensor based Microwave holographic imaging system is developed, demonstrating the feasibility of Microwave holographic imaging applications using a spintronic Microwave Sensor. The high sensitivity of the Microwave phase measurement allows the coherent imaging of the target reconstructed in noise environments. Adapting the broadband measurement, not only the shape but also the distance of target can be determined, which implies that a three-dimensional imaging is achievable using a spintronic device.

  • Microwave radar imaging using a solid state spintronic Microwave Sensor
    Applied Physics Letters, 2014
    Co-Authors: L. Fu, Y S Gui, D. Rodriguez-herrera, D. Flores-tapia, Stephen Pistorius, W Lu, C M Hu
    Abstract:

    In this paper, we demonstrate that spintronic Microwave Sensors have the capability to perform Microwave imaging. The detection of the amplitude and phase of a scattered Microwave signal over a wide frequency band allows this technique to determine the time delay of a Microwave signal scattered by the target. Combining Microwave radar techniques and a wavefront reconstruction algorithm with a spintronic Microwave Sensor in circular trajectory, the reconstructed images of targets are obtained. The reconstructed images clearly indicate the targets' positions even when the targets were immersed in a liquid to simulate an inhomogeneous tissue environment. Such a technique provides a promising approach for Microwave imaging, with the potential for biomedical applications.